In the conception of the building envelope, the sketch design is a crucial moment of the architectural design. The first drawing gives a concrete expression to the project author's first choices regarding ... [more ▼]

In the conception of the building envelope, the sketch design is a crucial moment of the architectural design. The first drawing gives a concrete expression to the project author's first choices regarding a set of requirements and preferences, as expressed by the multiple stakholders of the project, namely: the building owner, users, public authorities and the design team surrounding the architect. The present study explores a Multiple Criteria Decision Aid procedure (MCDA), an aid to help stakeholders improve this stage of the sketch design. The methodology is built close to the usual design process. This paper presents design and decision aid intertwined procedures and briefly describes the softwares involed: AMCE and EsQUIsE. The decision aid process is a first attempt to address the architectural sketch design challenge. The reader is expected to react to the suggested presentation of this still open MCDA problem. [less ▲]